/// <summary>
/// Gets the rows that pertain to the data change type.
/// </summary>
/// <param name="dataChangeTypes">Type of the data changes.</param>
/// <returns>Retursn a <see cref="DeltaRowCollection" /> representing the delta rows for the data change type.</returns>
public DeltaRowCollection GetRows(params esriDataChangeType[] dataChangeTypes)
{
var rows = this.Where(deltaRow => dataChangeTypes.Contains(deltaRow.DataChangeType));
var collection = new DeltaRowCollection(this.ModifiedClassInfo, this.SourceVersion, this.TargetVersion);
collection.AddRange(rows);
return(collection);
}
/// <summary>
/// Combines the rows from the collections in into a single collection
/// </summary>
/// <param name="collections">The collections.</param>
/// <returns>
/// Retursn a <see cref="DeltaRowCollection" /> representing the delta rows for the data change type.
/// </returns>
public DeltaRowCollection GetRows(params DeltaRowCollection[] collections)
{
var collection = new DeltaRowCollection(this.ModifiedClassInfo, this.SourceVersion, this.TargetVersion);
foreach (var rows in collections)
{
collection.AddRange(rows);
}
return(collection);
}
/// <summary>
/// Gets the differences between the <paramref name="source" /> and <paramref name="target" /> versions that need to be
/// checked-in or exported.
/// </summary>
/// <param name="source">The source (or child) version.</param>
/// <param name="target">The target (or parent) version.</param>
/// <param name="predicate">
/// The predicate that defines a set of criteria and determines whether the specified differences
/// will be loaded.
/// </param>
/// <param name="dataChangeTypes">The data change types.</param>
/// <returns>
/// Returns a <see cref="Dictionary{String, DeltaRow}" /> representing the differences for the table (or
/// key).
/// </returns>
/// <exception cref="System.ArgumentNullException">
/// target
/// or
/// predicate
/// or
/// dataChangeTypes
/// </exception>
public static Dictionary <string, DeltaRowCollection> GetDataChanges(this IVersion source, IVersion target, Func <IModifiedClassInfo, bool> predicate, params esriDataChangeType[] dataChangeTypes)
{
if (source == null)
{
return(null);
}
if (target == null)
{
throw new ArgumentNullException("target");
}
if (predicate == null)
{
throw new ArgumentNullException("predicate");
}
if (dataChangeTypes == null)
{
throw new ArgumentNullException("dataChangeTypes");
}
var list = new Dictionary <string, DeltaRowCollection>(StringComparer.Create(CultureInfo.InvariantCulture, true));
IVersionDataChangesInit vdci = new VersionDataChangesClass();
IWorkspaceName wsNameSource = (IWorkspaceName)((IDataset)source).FullName;
IWorkspaceName wsNameTarget = (IWorkspaceName)((IDataset)target).FullName;
vdci.Init(wsNameSource, wsNameTarget);
IDataChanges dataChanges = (IDataChanges)vdci;
IDataChangesInfo dci = (IDataChangesInfo)vdci;
var tasks = new List <Action>();
IEnumModifiedClassInfo enumMci = dataChanges.GetModifiedClassesInfo();
foreach (var mci in enumMci.AsEnumerable())
{
// Validate that the table needs to be loaded.
if (predicate(mci))
{
string tableName = mci.ChildClassName;
tasks.Add(() =>
{
var rows = new DeltaRowCollection(mci, source, target);
var actions = new List <Action>();
// Determines if the table represents a feature class.
bool isFeatureClass = mci.DatasetType == esriDatasetType.esriDTFeatureClass;
// Iterate through all of the data change types.
foreach (var dataChangeType in dataChangeTypes)
{
actions.Add(() =>
{
// IRow objects returned from a difference cursor are meant to be a read only. Thus, only the OIDs are being loaded and
// the rows are hydrated from the struct.
IFIDSet set = dci.ChangedIDs[tableName, dataChangeType];
set.Reset();
int oid;
set.Next(out oid);
while (oid != -1)
{
var row = new DeltaRow(dataChangeType, oid, tableName, isFeatureClass);
rows.Add(row);
set.Next(out oid);
}
});
}
if (actions.Any())
{
Task.WaitAll(actions);
}
list.Add(tableName, rows);
});
}
}
if (tasks.Any())
{
Task.WaitAll(tasks);
}
return(list);
}
